Tham khảo tài liệu 'longman grammar of spoken and written english part 63', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Circumstance adverblals 847 Table Proportional breakdown of semantic categories for the subordinator as across dialects and registers each represents 5 represents less than manner reason time AmE CONV ailHIBlUidii Ü iisiaiBB BrE CONV Hl Fl CT a a a a a a h h a AmE NEWS 0 miiiiB a BrE NEWS can a HaaaaaBiff ti0i a ACAD B a S H H a aaiai As they entered the salon the two gunmen ran past a group of children on their way home from school news In some cases the clauses introduced with as blend semantic roles. One event happening at the same time as another can also imply that the one event is the reason for the other 1 She kept her head down as she spotted the newsmen. BrE news 2 As details of the respective bids were unveiled in London and Delhi Today s revelations that the TCCB has been outmanoeuvred by the sub-continent were confirmed. BrE news In these examples the adverbial clauses seem to give the reason for the state in the main clause in addition to describing concurrent events. Thus in 1 it is implied that she kept her head down because she spotted the newsmen and in 2 the revelations were confirmed because the bids were unveiled. Neither conversation nor academic prose have particularly high frequencies of manner adverbial clauses but when they are used in these registers the clauses often take the subordinator os All of a sudden as they like to do in Birmingham station all the trains are coming in on different platforms from usual coNvf It is essential to add that plate tectonics has crept into this matter as it has into every other aspect of the earth sciences acad Finally it is interesting that both BrE conversation and academic prose use as for reason proportionally more than the other registers You can t ignore it - it s the first thing a buyer will a buyer s survey will pick up especially as it was mentioned in our survey. BrE conv Did you tell him as he s threatened to come home BrE conv As a declaration win not quash a decision it cannot be .